Improvement in windmills



' 2 sheets-shew. I. SANDERS. Wind-Mill. No, 165,030, Patentedlune29,l875.

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INVENTOR WITNESSES f f ATTORNEYS THE GRAPHIC C0.PHOT('| LITHJQ 8K4? PARKPLACE NY.

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J. SANDERS.

Wind-Mill.

Patented lune 29, I875.

WITNE s INVENTOR I W %ua(&1-d,

ATTORNEYS UNI ED STATES PATENT Orrron JOHN SANDERS, on GILEAD, MICHIGAN.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters'Patent No. 165,030, dated June 29,1875; application filed January 16, 1875.

To all whom it may concern Be it known that I, J oHN SANDERS, of Gilead,in the county of Branch and State of Michigan, have invented a new andvaluable Improvement in Wind mills; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference bein'g had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure l of the drawings is a representation ofa rear view of mywindmill. Fig. 2 is a vertical sectional view of the same, and Figs. 3and 4 are detail views.

My invention has for its object to furnish a simple and effective meansfor making the wheel of a windmill automatically adjustable, so that itwill edge to the wind, according to the force thereof.

My invention consists in the employment of blocks pivoted to the vane,as hereinafter more fully set forth, whereby the gravity of the vane isemployed to return the wind-wheel when turned to its normal position.

In the annexed drawings, A designates the tower of the mill, and B atube, which is rigidly secured to the upper end thereof by means ofclamping-hooks a. This tube has a flange, 1), formed onit, by which itis supported upon the upper end of the tower. G designates a tubularturntable, on which two arms, D D, are formed, for a purpose hereinafterexplained. This turn-table is supported upon anti-friction wheels 0,which are held in recesses in a ring, 0, and which roll upon the annularflange b. The windwheel E is keyed on a crank-shaft, d, which has itsbearin gs in the arm D, and which gives motion to the pump-rod, as willbe hereinafter explained. The wheel E is composed of narrow blades 6,which are secured into hoops f, which hoops are rigidly secured to armsf by means of clamps g. By thus securing the hoops fl do not weaken thearms f, and I secure together the sections composing the hoops. l3designates a pitman, which is applied to the crank of the shaft d, andadj ustably attached to one end of a lever, h, which has its fulcrum ona vibrating link, It, pivoted to a lug on the turn-table C. One end oflever h is pivoted to two parallel rods, j j, which pass through thetube B and turn-table O, and have a tubular connection, 2', on theirlower ends.

The

upper ends of the rods j j are guided by an overhanging portion of thearm D. The tube t'is suitably connected to the pump-rod. G

desired" angle with respect to the plane of the said wheel by means of achain, a, which is passed around pulleys p p, and carried down throughthe tube B-to the base of the tower, where it is attached to a cleat.

By connecting the crank of shaft d to the rods j j, as described, thewheel E lifts the a pump while the crank is descending, therebyobtaining the advantage of the weight of the pitman F and momentum ofthe wheel E for balancing the mill. 7

It will be observed that the vane is hung so that it will descend by itsown gravity as v the force of the wind diminishes and the wheels face isbrought around to it.

I am aware that a windmill so constructed and arranged that thewind-wheel, when turned upon its vertical axis and its face brought to aplane parallel or approximately parallel with the vane or rudder, will,when released, return to its normal position by the gravity of the vane,has heretofore been employed, and I therefore lay no claim, broadly, tosuch invention. 7

What I'claim as new, and desire to secure by Letters Patent, is-

The blocks 1 l, pivoted to projections on the arm D, and also pivoted tothe inner ends of the vane, in combination with the chain it and pulleysp p, by means of which the vane rises and descends as it swings around,substantially as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

, JOHN sANnERs.

Witnesses:

FREDERICK O. MATHER, BYRON MARSH.

This vane is connected by i

